diff --git a/libserf-python3.patch b/libserf-python3.patch
index 8b25520..3c7edc8 100644
--- a/libserf-python3.patch
+++ b/libserf-python3.patch
@@ -28,3 +28,33 @@ diff -up serf-1.3.9/SConstruct.python3 serf-1.3.9/SConstruct
  
  apr = str(env['APR'])
  apu = str(env['APU'])
+diff -uap serf-1.3.9/build/check.py.python3 serf-1.3.9/build/check.py
+--- serf-1.3.9/build/check.py.python3	2015-09-17 13:46:24.000000000 +0100
++++ serf-1.3.9/build/check.py	2018-12-17 11:40:06.524901129 +0000
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/python3
+ #
+ # check.py :  Run all the test cases.
+ #
+@@ -52,16 +52,16 @@ if __name__ == '__main__':
+ 
+   # Find test responses and run them one by one
+   for case in glob.glob(testdir + "/testcases/*.response"):
+-    print "== Testing %s ==" % (case)
++    print("== Testing %s ==" % (case))
+     try:
+       subprocess.check_call([SERF_RESPONSE_EXE, case])
+     except subprocess.CalledProcessError:
+-      print "ERROR: test case %s failed" % (case)
++      print("ERROR: test case %s failed" % (case))
+       sys.exit(1)
+ 
+-  print "== Running the unit tests =="
++  print("== Running the unit tests ==")
+   try:
+     subprocess.check_call(TEST_ALL_EXE)
+   except subprocess.CalledProcessError:
+-    print "ERROR: test(s) failed in test_all"
++    print("ERROR: test(s) failed in test_all")
+     sys.exit(1)